Sony PCG-GRX580P - Manual (Page 171)

Troubleshooting Audio
My speakers make no sound.
 If the built-in speakers are turned off, press the Fn+F3 keys simultaneously to turn on the speakers. You can also
turn on the speakers using the center Jog Dial control.
 If the speaker volume is turned to the minimum, press the Fn+F4 keys simultaneously, and then press or to
increase the volume or you can use the center Jog Dial control to adjust the volume.
 If nothing is displayed when you press the Fn+F3 or Fn+F4 keys simultaneously, then do the following:
1. Click Start on the Windows ® taskbar, then Control Panel, and then Sounds, Speech, and Audio
Devices.
2. Click Sounds and Audio Devices. The Sounds and Audio Devices Properties dialog box appears.
3. Make sure the Volume tab is open and the Mute check box is not selected.
 If your notebook is powered by batteries, check that the battery packs are inserted properly and that they are
charged.
 If you are using an application that has its own volume control, check that the volume is turned up.
 Check the volume controls in the Windows ® taskbar.
 If you connect external speakers, check that the speakers are properly connected and the volume is turned up. If
the speakers have a mute button, make sure it is off. If the speakers are powered by batteries, check that the
batteries are inserted properly and that they are charged.
 If you have connected an audio cable to the Headphone jack, disconnect the cable.
 If you are still experiencing problems, use the supplied Driver Recovery CD to reinstall the drivers. See To use the
Driver Recovery CD(s) for more information.
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